CEH

72 Chapter 3 ■ Cryptography

5. On the Default Response Rule Authentication Method screen, choose the option Use
   This String To Protect The Key Exchange (Preshared Key) and type password.


6. On the Completing The IP Security Policy Wizard screen, ensure that Edit Properties is
   selected, and then click Finish.


7. In the Secure21 Properties dialog box, click Add.


8. On the Welcome To The Create IP Security Rule Wizard screen, click Next.


9. On the Tunnel EndPoint screen, click This Rule Does Not Specify A Tunnel. Click
   Next.


10. On the Network Type screen, click All Network Connections, and then click Next.


11. On the IP Filter List screen, click Add.


12. In IP Filter List dialog box that appears, type Link1986, and then click Add.


13. On the Welcome screen of the IP Filter Wizard, click Next.


14. In the Description field, type 21 IPSec Filter. Click Next.


15. On the IP Traffic Source screen, click Any IP Address, and then click Next.


16. On the IP Traffic Destination screen, click Any IP Address, and then click Next.


17. On the IP Protocol Type screen, click TCP in the drop-down list, and then click Next.


18. On the Protocol Port screen, select From This Port, type 21 in the text box, select To
    Any Port, and then click Next.


19. On the Completing The IP Filter Wizard screen, click Finish, and then click OK.


20. In the IP Filter list, select Link1986, and then click Next.


21. In the Filter Action dialog box, click Add.


22. In the Filter Action Wizard dialog box, click Next.


23. In the Filter Action Name dialog box, type Secure21Filter, and then click Next.


24. In the Filter Action General Options dialog box, select Negotiate Security, and then
    click Next.


25. On the Communicating With Computers That Do Not Support IPsec screen, select Do
    Not Allow Unsecured Communications, and then click Next.


26. On the IP Traffic Security screen, select Integrity and Encryption, and then click Next.


27. On the Completing The IP Security Filter Action Wizard screen, click Finish.


28. In the Filter Action dialog box, select Secure21Filter, and then click Next.


29. In the Authentication Method dialog box, select Use This String To Protect The Key
    Exchange (Preshared Key), type password, and then click Next.


30. On the Completing The Security Rule Wizard screen, click Finish.


31. In the Secure21 Properties dialog box, click OK.
    Once you’ve created the policy you must activate it, so let’s do that.
    On Computer A: